[Haskell-cafe] documentation of Haskell's hierarchical libraries

I am wondering where I might be able to get a reasonably complete documentation of Haskell's libraries. I was using the documentation at https://downloads.haskell.org/~ghc/latest/docs/html/libraries/ but I noticed that it was missing hash tables, which are located in Data.HashTable. I am not sure what other modules might be missing from there. Is there some place where everything (up to some release) is documented? thanks PS the documentation bundled with the Haskell Platform (7.10.2-a) is even worse as its missing large sections of what you find at the online documentation